Heavy rains drenched parts of Southern California on March 22 and into March 23, 2020. The coastal mountain ranges were also hit by the widespread rain, while some beneficial rain and snow fell in the southern San Joaquin Valley and the Sierra Nevada. Southern...
March 23, 2020
A large and slow-moving late-season winter storm started dumping significant heavy snow on California's Sierra Nevada on Saturday, March 14, 2020. Up to 1.8 m (6 feet) of snow is expected in the following days, replenishing the mountains following the...
March 16, 2020
Drought conditions are returning to California as major rain and significant mountain snow had not fallen since December 2019. Sacramento and San Francisco have not seen a drop of rain in February 2020, which is usually one of the wettest months of the year for the...
February 21, 2020
California's new statewide earthquake early warning system-- the MyShake app-- has sent out its first public alert on Tuesday, December 17, 2019. The warning was sent for M4.3 tremor that took place in Monterey and San Luis Obispo counties, along the San Andreas...
December 19, 2019
Scientists have discovered thousands of mysterious holes in the seabed off Big Sur, California. Researchers from the Monterey Bay Aquarium Research Institute (MBARI) were surveying the deep seafloor off Big Sur when they found the strange holes. The bigger holes...
December 15, 2019
Heavy snow blanketed the Antelope Valley in California as a storm hit the high desert area on November 28, 2019. Palmdale saw more than a dusting of snow with over 76 mm (3 inches) covering the region, while some parts of Lancaster saw more than 127 mm (5 inches) of...
November 30, 2019
San Francisco registered 8.8 °C (48 °F) on Thursday, November 28, 2019, and tied with November 27, 1896, for the coldest November day on record. Meanwhile, North Bay dealt with below-freezing temperatures overnight, with Novato Airport hitting -5 °C (23...
November 30, 2019
A powerful storm system is set to approach the West Coast of the USA this weekend, soon after the 'bomb cyclone' pushes east of the Rockies. The storm will bring more rounds of heavy rain and snow to California, beginning on November 30 and December 1, 2019....
November 29, 2019
Critical and extremely critical fire weather conditions continue across parts of California through Thursday, October 31, 2019, especially for southern California. At least 10 fires are burning across the state on October 30, with more than 26 million people under...
October 30, 2019
A total of 200 000 residents in Sonoma County were put under mandatory evacuation on Sunday morning, October 27, 2019, due to the rapidly growing Kincade Fire which started burning Wednesday last week, October 23. According to deputies, it is the largest evacuation...
October 28, 2019
A fast-moving wildfire has exploded in rural Sonoma County late Wednesday (LT), October 23, 2019. The so-called Kincade Fire further intensified by 113 km/h (70 mph) winds, consuming around 4 047 hectares (10 000 acres) by October 24 and forcing hundreds of...
October 24, 2019
A new study of the Ridgecrest Earthquake Sequence, the largest earthquake sequence in Southern California, that began on July 4, 2019, provided new evidence that massive earthquakes can happen in a more complex fashion than commonly expected. The observation by...
October 20, 2019
A strong early-season snowstorm pounded several parts of the United States in the first half of October. The unusual weather set records, with snowstorm blanketing the Northern Rockies and Northern Plains. Meanwhile, blizzard conditions have hit Dakota, while Denver...
October 14, 2019
Critical to extremely critical fire weather conditions continue on Friday across portions of Southern California due to gusty winds and a very dry airmass. These conditions should subside by the weekend as an upper level trough approaches the region. The setup has...
October 11, 2019
Winds from the same storm set bringing another round of cold air and heavy snow to the interior Northwest increase wildfire ignition threats and spread over California. As a safety precaution, electricity will be turned off for some parts of California on October 9,...
October 09, 2019
A series of unusual weather events hit the city of Davis, California, on September 28 and 29, 2019. Thunderstorms swept through the state's central part, producing dime-sized hail. A tornado was also spotted near the area. The tornado touched down at 18:40 LT...
September 30, 2019
The seismic activity that started early July 6, 2019 at the southern margin of Coso Volcanic Field in Inyo County, California continues at a rate of about 600 M1.0 or greater earthquakes per day. The activity was triggered by a magnitude M5.4 earthquake at 04:19...
July 10, 2019
The USGS has issued its Aftershock Forecast following M7.1 Ridgecrest, CA earthquake at 03:19 UTC on July 6, 2019. An updated version issued 02:55 UTC, July 7 is posted below and marked Update. Over the next 1 week, there is is a 3 % chance of one or more...
July 06, 2019
A very strong and shallow earthquake registered by the USGS as M7.1 hit Southern California at 03:19 UTC on July 6, 2019 (20:19 local time, July 5). The agency is reporting a depth of 17 km (10.5 miles). EMSC is reporting M7.1 at a depth of 10 km (6.2 miles). This...
July 06, 2019
A strong and shallow earthquake registered by the USGS as M6.4 hit Central California at 17:33 UTC (10:33 local time) on July 4, 2019. The agency is reporting a depth of 8.7 km (5.4 miles). EMSC is reporting M6.4 at a depth of 2 km (1.2 miles). At least 160...
July 04, 2019
Sky watchers in the San Francisco Bay Area, California witnessed an extraordinary display of noctilucent clouds (NLCs) on June 9, 2019. As these clouds are typically confined to latitudes above +55 N and San Francisco is at +38 N, this marks one of the...
June 10, 2019
Tar and what appears to be natural gas has begun to ooze onto the sidewalk on the Miracle Mile near the La Brea Tar Pits, Los Angeles, California on Saturday, June 8, 2019. The La Brea Tar Pits are a group of tar pits around which Hancock Park was formed in urban...
June 09, 2019
A rare May storm swept through Southern California on May 22 and 23, 2019, bringing heavy rain, hail and even snow to parts of the region. The worst-hit were Inland Empire and eastern central area of Orange County where heavy rain was reported, according to ABC7....
May 23, 2019
An unusually strong storm for the time of year is affecting the Western U.S., dumping heavy rain and higher elevation snow. Many cities could double or triple their normal precipitation for May, normally a dry month, in just 24 to 48 hours, meteorologists warn. This...
May 16, 2019
A potent weather system will bring rain, locally, heavy with higher elevation snow to portions of California, southwestern Oregon, and the Northern Rockies. As much as 60 cm (2 feet) of snow may blanket the California mountains above 1.8 km (6 000 feet). Rain and...
May 15, 2019
Five minor to moderately strong earthquakes were registered at Mendocino Triple Junction, west of Eureka, California at a depth of 10 km (6.2 miles) on May 5, 2019. The strongest was M4.8 detected at 06:46 UTC on May 5. The sequence started with M3.1 at 04:17 UTC,...
May 06, 2019
Caltech seismologists have identified nearly two million previously unidentified tiny earthquakes that occurred between 2008 and 2017 in Southern California, expanding the region's earthquake catalog by a factor of 10. Their efforts, published online by the...
April 23, 2019
A powerful dust devil formed in the city of Fairfield, Solano County, California on April 9, 2019 and was captured on video. The twister was strong enough to rip off part of the roof of one building and send debris flying everywhere. Dust devils are small but...
April 11, 2019
"With full reservoirs and a dense snowpack, this year is practically a California water supply dream," California DWR Director Karla Nemeth said April 2, 2019, after latest Sierra snowpack measurement. California state officials made their monthly snowpack...
April 03, 2019
An unusually intense thunderstorm brought by yet another atmospheric river hit Southern California on Tuesday night, March 5, 2019, stretching from southern Kern County past the Channel Islands. Shortly after 20:00 PST, the National Weather Service recorded 1 489...
March 07, 2019
Four days of heavy snowfall came to an end on February 28, 2019, leaving statewide snowpack at 153% of normal. Snow depths and water content equaled California's all-time record level for February. While most of the state's reservoirs are at or above 100% of...
March 05, 2019
Russian River at Guerneville crested with a preliminary height of 13.83 m (45.38 feet) at 22:00 PST, Wednesday, February 27, 2019. Major flooding continued Thursday morning but the river is expected to slowly recede through the day and fall below flood stage of...
February 28, 2019
A slow-moving storm brought widespread heavy precipitation across central to northern California and very heavy snow through the Sierra on February 26 and 27, 2019. The County of Sonoma has issued mandatory evacuations to residents living near the Russian River....
February 27, 2019
February 2019 has been a very cold month across all of southwestern California. With just 4 days remaining in the month, February 2019 ranks as the coldest February in Downtown Los Angeles since 1962. In Downtown Los Angeles, the average daily mean temperature for...
February 25, 2019
A very cold upper low pressure system tracked across California on February 21, 2019, bringing scattered showers, with snow showers down to extremely low levels, and isolated thunderstorms with hail. Snow showers were reported by spotters in Thousand Oaks, Simi...
February 23, 2019
A winter storm named Quiana by The Weather Channel dumped heavy snowfall on parts of the Southwest and brought rare wintry precipitation to parts of Los Angeles County. Snow fell on Las Vegas for the 5th time this month on February 21 - this was the first time since...
February 22, 2019
Los Angeles, California received 250.19 mm (9.85 inches) of rain so far this year, more than it received during the entire 2018 - 198.12 mm (7.80 inches). While Los Angeles sees about 355.6 mm (14 inches) of rain in a full year, this year's 250 mm probably says...
February 18, 2019
Atmospheric river dumped heavy rain and snow on parts of California on February 13 and 14, 2019, causing floods and landslides. Two homes was destroyed early February 14 and one woman hospitalized. Heavy rain will continue affecting parts of the state into this...
February 14, 2019
The weather system on the West coast will interact with a deep plume of tropical moisture from near Hawaii bringing heavy rain along the central and southern Californian coast, which may produce flash flooding, and possibly debris flows near recent wildfire burn...
February 13, 2019
A powerful Pacific storm hit southern California on February 2 and 3, 2019, bringing heavy rain and strong winds. During the peak of the storm, coastal and valley areas received up to 25 mm (1 inch) of rain per hour. Key highways were shut down as mud and water...
February 04, 2019